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Home My WebLink About1.18 Soils Information2010 P:\23511\133-23511-10003\GIS\SOILSEXHIBIT.MXD 0 (0 Legend Permit Boundary Almy loam, 1 to 12 percent slopes Empedrado loam, 2 to 6 percent slopes - Fluvaquents, 0 to 10 percent slopes lb TETRA TECH www.tetratech.com LAFARGE WEST, INC. Project No.: 133-23511-10003 1900 S. Sunset Street, Ste. 1-F Longmont, Colorado 80501 PHONE: (303) 772-5282 FAX: (303) 772-7039 CERISE MINE SITE Date: AUG 03. 2010 Designed By: JJA Section 24 Map Unit Description: Almy loam, 1 to 12 percent slopes—Aspen-Gypsum Area, Cerise Mine Colorado, Parts of Eagle, Garfield, and Pitkin Counties Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties 6—Almy loam, 1 to 12 percent slopes Map Unit Setting Elevation: 6,000 to 7,800 feet Mean annual precipitation: 12 to 14 inches Mean annual air temperature: 42 to 46 degrees F Frost -free period: 85 to 105 days Map Unit Composition Almy and similar soils: 80 percent Description of Almy Setting Landform: Alluvial fans, hills Landform position (two-dimensional): Footslope Down-slope shape: Linear Across -slope shape: Linear Parent material: Alluvium derived from calcareous sandstone and/or alluvium derived from calcareous shale Properties and qualities Slope: 1 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 2.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water capacity: Moderate (about 8.6 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability (nonirrigated): 4e Ecological site: Rolling Loam (R048AY298C0) Other vegetative classification: ROLLING LOAM (null_20) Typical profile 0 to 8 inches: Loam 8 to 26 inches: Fine sandy loam 26 to 60 inches: Sandy clay loam Data Source Information Soil Survey Area: Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Survey Area Data: Version 5, Jun 9, 2008 USDA Natural Resources rata Conservation Service Web Soil Survey National Cooperative Soil Survey 3/12/2010 Page 1 of 1 Map Unit Description: Empedrado loam, 2 to 6 percent slopes—Aspen-Gypsum Cerise Mine Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties 34—Empedrado loam, 2 to 6 percent slopes Map Unit Setting Elevation: 6,500 to 9,000 feet Mean annual precipitation: 15 to 18 inches Mean annual air temperature: 40 to 44 degrees F Frost -free period: 75 to 95 days Map Unit Composition Empedrado and similar soils: 80 percent Description of Empedrado Setting Landform: Fans, hills Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across -slope shape: Linear Parent material: Alluvium and/or eolian deposits Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 10 percent Available water capacity: High (about 11.3 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability (nonirrigated): 4e Ecological site: Deep Loam (R048AY292C0) Other vegetative classification: DEEP LOAM (null_11) Typical profile 0 to 5 inches: Loam 5 to 14 inches: Clay loam 14 to 40 inches: Clay loam USDA Natural Resources rata Conservation Service Web Soil Survey National Cooperative Soil Survey 3/12/2010 Page 1 of 2 Map Unit Description: Empedrado loam, 2 to 6 percent slopes—Aspen-Gypsum Cerise Mine Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties 40 to 60 inches: Clay loam Data Source Information Soil Survey Area: Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Survey Area Data: Version 5, Jun 9, 2008 USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 3/12/2010 Page 2 of 2 Map Unit Description: Fluvaquents, 0 to 10 percent slopes—Aspen-Gypsum Cerise Mine Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties 42—Fluvaquents, 0 to 10 percent slopes Map Unit Setting Elevation: 3,500 to 7,200 feet Mean annual precipitation: 14 to 18 inches Mean annual air temperature: 45 to 52 degrees F Frost -free period: 80 to 150 days Map Unit Composition Fluvaquents and similar soils: 90 percent Description of Fluvaquents Setting Landform: Flood plains, valley floors Down-slope shape: Concave Across -slope shape: Linear Parent material: Mixed alluvium Properties and qualities Slope: 0 to 10 percent Depth to restrictive feature: More than 80 inches Drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in/hr) Depth to water table: About 6 to 24 inches Frequency of flooding: Occasional Frequency of ponding: None Calcium carbonate, maximum content: 10 percent Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm) Available water capacity: Moderate (about 8.2 inches) Interpretive groups Land capability classification (irrigated): 6w Land capability (nonirrigated): 6w Ecological site: River Bottom (R048AY236C0) Other vegetative classification: riverbottom (null 19) Typical profile 0 to 10 inches: Variable 10 to 24 inches: Stratified gravelly sand to clay 24 to 60 inches: Very gravelly sand, gravelly sand Data Source Information Soil Survey Area: Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Survey Area Data: Version 5, Jun 9, 2008 USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 3/12/2010 Page 1 of 1